Why is the ruby fish not red?
In recent years, ruby fish have become a popular choice among aquarium enthusiasts due to their bright colors and unique appearance. However, many breeders have found that their ruby fish are not as bright red as expected, or even dull in color. What is going on? This article will give you a detailed analysis of the feeding environment, diet, health, etc., and also attaches hot topic data from the entire Internet in the past 10 days for reference.
1. Common reasons why ruby fish are not red

The body color of ruby fish is affected by many factors. The following are the main reasons why its color is not red:
| Reason | Specific performance | solution |
|---|---|---|
| water quality issues | Unstable pH value and high ammonia nitrogen content | Change the water regularly to keep the pH at 6.5-7.5 |
| Insufficient light | The fish tank is dimly lit and lacks natural light | Provide 8-10 hours of light every day and avoid direct sunlight |
| Single diet | Long-term feeding of ordinary feed, lack of astaxanthin | Add astaxanthin-rich feed or live bait |
| health problems | Parasitic or bacterial infection | Prompt isolation and treatment to keep water clean |
| genetic factors | Individual differences or impure varieties | Choose high-quality breeder fish to avoid inbreeding |
2. Hot topic data on the entire network in the past 10 days
The following are hot topics and content related to aquarium breeding in the past 10 days for your reference:
| Ranking | topic | heat index | Main discussion content |
|---|---|---|---|
| 1 | Tips for raising ruby fish | 9.2 | How to Enhance Ruby Fish Body Color |
| 2 | Aquarium water quality management | 8.7 | pH and ammonia nitrogen control methods |
| 3 | Color-enhancing feed for ornamental fish | 8.5 | Effect of astaxanthin on fish body color |
| 4 | Common diseases of tropical fish | 7.9 | Prevention and treatment of white spot disease and fin rot |
| 5 | New Trends in Aquascaping | 7.6 | Natural style landscaping is popular |
3. How to restore the bright red color to ruby fish
In order to make the ruby fish show the ideal red color, you need to start from the following aspects:
1. Optimize water quality environment
Ruby fish are more sensitive to water quality. It is recommended to change 1/3 of the water every week and use water quality testing agents to monitor pH value, ammonia nitrogen and nitrite content. Stable water quality is the basis for ensuring fish health.
2. Scientifically proportioned feed
In addition to regular feed, foods rich in astaxanthin can be added, such as frozen red worms, spirulina, etc. Astaxanthin is a natural pigment that can effectively enhance the red color of fish. It is recommended to feed 2-3 times a day, and each meal should be eaten within 3 minutes.
3. Reasonable lighting
Proper lighting can promote pigmentation in ruby fish. It is recommended to use full-spectrum aquarium lights to provide 8-10 hours of light every day, but avoid direct sunlight that can cause algae growth.
4. Reduce stress
Ruby fish will fade under stress. Frequent movement of the fish tank, sudden changes in the environment, or mixing of aggressive fish should be avoided. Shelter houses and aquatic plants can be arranged in the tank to provide it with a sense of security.
4. Common misunderstandings in raising ruby fish
Many breeders tend to fall into the following misunderstandings when caring for ruby fish:
| Misunderstanding | Correct approach |
|---|---|
| Overreliance on color-enhancing feeds | Should be used in conjunction with high-quality basic feed |
| Ignore changes in water temperature | Maintain a constant temperature of 24-28℃ |
| Change decoration frequently | Keep the environment stable and reduce changes |
| Improper mixing | Avoid mixing with aggressive fish |
5. Conclusion
The problem of ruby fish not being red is often the result of a combination of factors. By improving the breeding environment, optimizing the diet and reducing stressors, the bright red color of the fish can be restored in most cases. If there is still no improvement after trying the above methods, it is recommended to consult a professional aquarium store or veterinarian to rule out disease factors. Remember, patience and careful care are the keys to raising a good ruby fish.
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